c_reek

And.... that didn't go well. I got all the parts. I had to buy some dupes of the resistors. I spent $9. I spent some time soldering all the bits in. Plugged it in, and found out that the buzz from before was sparks flying every which way. From the vicinity of the transistor I replaced, but the new one looked fine afterwards. Now I wonder if there is viscious arcing between some of the other reistors of if there is some problme with that high voltage bit oh well, it was fun to try.

It was pretty brutal. Goes to show that replacing a fuse before troubleshooting can have nearly explosive results. I'll see about getting a picture. There is soot and metal-like bits from the transistor all the way over to the next heatsink. One post of the transitor had also evaporated. I tried the electronics store yesterday, but missed them by 10 minutes, they closed, will try at lunch.

Hehe, not being smart or anything, but the front side of the transistor is blown out and spread all over the pcb. The big hole in the front of it is why I couldn't make out the part number. This was the first problem I found when I opened it up and followed the smoke. The resistors mentioned above and the diode look pretty beat up too. I didn't look at them until after I read this post. Unfortunately, I'm thinking other things I've not found are fried as well.

I got about 4 years out of mine. E-mail'd the promedia address and was told that these are no longer serviced. Any e-mail regarding details on repair are ignored. E-mails asking how long I should expect the equipment to last are ignored. So far 5 e-mails out and 2 e-mails back. I got the first one back telling me no service is available but I can get a discount on 5.1's. The other e-mail back said I can't get relevant technical data for repair. 1 general rant was unacknowledge. I can half understand that, but I expected at least a polite tell off. 2 inquiries, one indirect and one direct, as to the reliability of promedia 5.1's were ignored. Thus far the tales I've read have not said much for support. 1 person so far I've read about getting things fixed and mentioned 'Klipsch bending over backards to help'. All else have been general complaints kinda like this one. Bottom line: They want me to dump more money into a product that has all the appearances as a money pit. I'll shut up now, thank you for listening.

I found about about these failures of the promedia system two days ago. The morning I read about them, I thought "Good thing mine still works after 4 years!" I got home from work that day to find my speakers dead. I replaced a blown fuse, not a good idea. Then plugged it back in to hear a loud buzz. Unplugging quickly, I pulled the amp to explore. Following the smell and the charring. I found a component that had been blown out. After further investigating this thread today. I looked at the diode and 2 resistors aforementioned. R26 is cracked and the board is black between the diode and the other resistor. The damaged component, that I imagine was secondary to the resitor failure, is melted and I have trouble making out all the specs. I'm a electronic newb and have only done some minor repair work from online guides in the past (free IBM 260 21" monitor was worth it). So please pardon my description. On the heat sink near the transformer there are 2 three legged IC's that mount directly on the heatsink. I read somewhere else someone complaining about the lack of thermal grease on them and the fact the are clipped on not screwed. Anywho, I can read the top line as 'IRF 740.." the 40 is not for certain. the seond line is 'I*R 12' not sure on the 1 in this one. Could anyone ID this for me? Thanks in advance